Stock-blending mechanism



G. 's'. WLTHAMJR,

Feb. 12 1924,

sTocK BLBNDN lvIEcHA-lflrslvxk s sheets-sheet 1v Filed Fb'.' 1v. 19271@IRQ a Fe. i2 1924. l,483,4

` G. s. WITHA'M, JR

S TOCK BLENDING MECHANISM Filed Feb. 17, 1921 3 Sheets-Sheet 2 vp' fFeb. '12, 1924. 1,483,149

G. S. WITHAM, JR

STOCK BLENDING MECHANISM "Patented Feb. 12, 1924. j

D STA-Tas PATE T QFFICE.

GEORGE STANFORD wr'rIAM, JR.,OP HUDSON FALLS, NEW'YORK, AssIGNOR To.

UNION BAG-AND, PAPER CORPORATION, A CORPORATION or NEW JERSEY.

STOCK-BLENDING MECHANISM.

Application led February 17, 1921. Serial No. 445,589.

To all whom it may concer/n.; f

Be it known that I, GEORGE S.l WlTHAM, Jr., a citizen of the UnitedStates, residing at Hudson, Falls, in the county of Washington, State ofNew York, have invented cer.

tain new and useful Improvementsv in Stock- Blending Mechanism; and I dohereby declare the following to be a full, clear, and exact descriptionof the invention, such as will enable others skilled in-the art to`which it a pertains to make and use the same.`

y invention is an'improvement in paper Stock handling apparatus, andrelates toA that character of apparatus designed to receive the stockfrom the decker chest and to put it into condition to be run upon 'thepaper wire. n

\ An object of the invention is to provide an apparatus of4 thecharacter specified wherein known types of stock handling inachines areso combined and connected, that paper stocks of widely differentcharacter, as for instance soft and hard stocks; may be treated in thesame apparatus and brought to that degree of hydration which will givethe best .results in paper making for that character of stock.

Another object is to provide in such apparatus, means for blendingstocks of different character into a stock having a delinite andconst-antproportion of each, and wherein each stock will be of apredetermined and uniform consistency before it is blended with theother stock.

In the drawings, Figures 1 and 21 together constitute a front elevationconventionalized and diagrammatic'of the improved apparatus,

Figure 3 is a similarview of another arrangement.

.As isknown, each kind'of paper stock requires a particular treatment.As. for instance, softstoc'k, such as sulphite or ground wood requiresbut a few minutes treatment in the beaters now in use, while-hard stock,as for instance kraft requires a treatment of several hours, in order tofit it for the machine chest.- A mill making paper from the two stocksmust have an apparatus for each character of stock, and for this reasonit is necessary that a large number of beaters and accessories beprovided. In the present invention either' character of stock can betreated in the same apparatus. Furthermore, some mills practicecombining .same treatment.

two different stocks, as forinstance soft and hard, in the same beater,giving them the With this method, when the soft stock isr hydrated tothe proper degree, the hard will still be in the first stage oftreatment and consequently raw. O11 the other hand if the hard stock isproperly hydrated, the soft will be gelatinized and its propertiesdestroyed. The present invention is designed to permit stocks ofdifferent hardness to be combined into a stock suitable for the paperwire, with. each stock receiving the proper treatment to insure the bestresults for that character of -stock on the paper wire.

In the present embodiment of the inven` tion the soft stock vand thehard stock are fed from the decker chest to a Jordan engine, each of thefeeding meansihaving means inconnection therewith for insuring apredetermined and uniform consistency of the stockv controlled by thestock itself, there heilig interposed between the Jordan engine and thedecker -chest for the hard stock a series ofbeater engines for providingadditional treatment for such stock.

In the embodiment of the invention as shown in Figures 1 and 2, the softor sul-V phite stock from the beaters 1 is fed through the chute'2 tothe deckerhchest 3 which is of usual construction. A centrifugal pump 4is connected with the discharge outlet 5 of the decker chest, and thedelivery pipe 6 of the pump delivers into the float compartment of aFeeney regulator 7 of the character shown and described in Patent No.

1,134,831, granted .April 6, 1915. These regthe said chest. A pipe 9leads from the remaining compartment of the regulator toa Jordan engine10 of usual construction, the pipe 9 being connected with one of thevbranches of a Y 11 which is the inlet of the Jordan engine.

The hard stock is fed from the hard stock beaters 12 into a chest 13. Acentrifugal pump 14: is connected with the discharge 15 of the chest,and the delivery pipe 16 of 110 closed by springs 45 stems, between thesame and the casing 44..

. will thin the stock,

the pump delivers to the first of a series of Jordan engines indicatedat 17 and 18. An overflow pipe 19 is provided for carrying the surplusstock from the pump back to the chest 13. The rst Jordan engine 17 ofthe series delivers by a pipe 20 to the second Jordan engine 18 of theseries, and a pipe 21 leads from the second the series to the floatchamber of a Feeney regulator 22. An overflow pipe 23 .leads from theoverflow chamber of the Feeney regulator to t-he chest 13, and a pipe 24leads from the oat chamber of the Feeney regulator to the Jordan engine10 common to both stocks, connecting with the other branch ofthe Y 11.The Jordan engine 10 delivers by l 26, and a pipe 27 leads from the flowboX to the machine chest of the paper making machine. A branch pipe 28leads. from the pipe 27 to a second' Jordan engine 29, common to bothstocks, and this Jordan engine deliveis by a pipe 31 to the machinechest.

The regulators 7 and 22 control the consistency of the stocks in whosefeed lines they are interposed, and each regulator is controlled by thestock. The float 32 of each regulator is connected o one end of alever-33 pivoted intermediate its ends as at 34 tothe casing of theregulator. A link 35 connects eachY lever toa valve 36 which isinterposed in a fluid pressure supply pipe 37 and 38. The pipe 37extends to near the centrifugal pump 4 while the -pipe 38 eX- tends tonear the pump 1 4. Fresh water supply pipes 39 and 40 respectively, areconnected with the suction lines of the pumps 4 and 14, and a valve 41is interposed in each of these fresh water supply pipes 'adjacent to thepump. Each valve has a stem 42 which is connected with a diaphragm 43arranged within a casing 44. The diaphragm with the casing forms aclosed compartment, with which the adjacent fluid pres- Sureline 37 or38 as the case may be communicates. These valves are normally held whichencircle the lVhen the stock in either of the regulators ecomes toothick the float will be lifted, and the valve 36 will be opened. Thisopens the fluid pressure line 37 or 38 as the case may be, and admitsfluid under pressure to the diaphragm of the valve controlling the reshwater supply of the stock which is too thick. This increased supply offresh water and the stockwill thus be maintained uniformly at the properconsistency. A pair ofkpressure gages is arranged within each fluipressure pipe line 37 and 38, the members of each pair being on oppositesides of the valve 36. These gages indicate the pressure in the line oneach side of the valve.

Jordan engine of' means of a pipe 25 to a flow boxY essaies soft'stockfor instance the valve 50 is closed.

The stock is now fed from the decker chest to the F eeney regulator, andpasses from the regulator to the Jordan engine 10..

From here the stock passes to the flow box and from thence to themachine chest. lVhen hard stock is being treated, the valve 50 isopened, and the valve 49 is closed. The hard stock now passes from thedecker chest through the series of Jordan engines 17-18, to the Feeneyregulator 22, and from thence by way of the pipe 24 to the Jordan engine10. In either case if the stock is not sufficiently treated in theJordan engine 10, it may be diverted from the flow box to the Jordanengine 29. blending, from the chest to the float compartment of .theregulator 7. From the overow compartment of the regulator thesurplusstock flowsgback to the chest. A deiinite proportion of the said stockis fed to the common Jordan engine. The hard stock is pump 14 to theregulator 22, passing through the Jordan engines 17 and 18 which preparethe stock for blending with the soft stock, giving it the additionaltreatyment needed. A portion of the stock is returned as surplus to thedecker chest, and a portion thereof is fed to the Jordan enginev 10,where such portion is combinedwith the portion ofv the stock fed theregulator 7. The combined stock may be fed directly to the flow box 26,from whence itpasses by way. of the pipe 27 to the machine chest, or itmay be diverted through the second common Jordan engine 29. Valves 47and 48 are arranged in the pipes 25 and 28, and by closing one andopening the other, the stock may be caused to flow to the flow box or tothe Jordan engin In Figure 3 there is shown a construction, wherein theregulation of the density vof the stock is bymeans of Trimbeyconsistency regulators. This construction of regulator which is shownand described in Patent No. 1,178,193, granted April 4, 1916, .includesa stuff box 52 to which the beating mechanism for the softstockdelivers, by means of a pipe 53. The Stull' box has two transversepartitions 54 and 55 as shown, one of which, 54, is of less height thanthe stuf box.. The pipe 53 `opens into the central compartment, and theoverflow which passes over the partition 54 is returned by a pipe 56 tothe In the operation of the soft Astock is fed by the pump fed by the ilon mesme beater. The partition 55 has a hand operated gate forcontrolling the flow of the stock into the adjacent lateral compartment,and this compartment delivers by a pipe 57 to a Jordan engine 58, thepipe 57 connecting with one of the branches of a Y 59. A valve 60 isinterposed in the length of the pipe 57,

for controlling the ow of the stock through l livers either to a fiowbox 66 by means of a pipe 67, or to asecond Jordan engineby means of apipe .68, which leads from the pipe 67 between the Jordan engine and a pvalve 69. The pipe 68 is provided with a valve 70 and by closing thepropervalves, the stock may be made to flow from the Jordan engine tothe flow box, or to the second Jordan engine, byway of the pipe 68. A pie.71 connects thelow box with the machine chest not shown.

ranged in the pipe 62 which carries the stock from the decker chest tothe stuii' box, in the same manner as in the construction of' Figures 1and 2.

Each regulator includes in addition to the stuii:l box a constant levelchamber 51, which takes a sample of the stul from the central a variabed to move vertically, and which controls through pawl and ratchetmechanism .indi- .cated at 77 a valve in a water supply pipe -78 whichconnects with the suction of the chamber of the stu box, by means of apipe 72. This constant level chamberv 51 has an overflow partitionk73dividing the chamber into two compartments. From one of thesecompartments a pipe 74 leads to the overow pipe 56, and the otherchamber has a discharge spout 7 5. Thesaid spout delivers to e levelchamber 7 6, which is mountstock pump, in the same manner` as shown inres 1 and 2. The ,variable level cham- A'b'erf discharges -into the`overiow pipe 56.- 'lhe' variable` level chamber has a discharge orificethrough which the' discharge is relatively constant, due to the constanthead under which the discharge takes place.` The variations in thev head`of the stock within the chamber will correspond substantially withvthe' variations inv the stock consistenc and the movement of the'variable level. c amber will 'operate the valve to increase or diminishthe water supply to the stock, whereby to lmaintain a su stantiall'yuniform density. The operation of this construction is precisely thesame as p It lwill be .under` stood that a series of beater engines isarf.

that in the construction shown in Figures 1 and 2, so far as regardsthe'treating of the stock, and the ultimate results attained. In the oneconstruction the Feeney regulator is used, while in the other theTrimbey regulator is made use of.

I claim: y

1. Apparatus for treating hard or soft stock, comprising a Jordanengine, a density regulator for each character of stock to be treated,each regulator delivering to the J ordan engine, and means fordisconnecting any regulator from the Jordan engine.

2. Apparatus for treating hard or soft stock,rcomprising a Jordanengine, a density regulator for each character of stock to be treated,each regulator delivering to the Jordan engine, means for disconnectingany regulator from the Jordan engine, a flow box to which the Jordanengine delivers, thev low box delivering to the paper making machine, avsecond Jordan engine, and means for delivering the stock from the firstengine to' the flow box or to the second engine.

3. Apparatus for treating hard or 'soft stock, comprising la Jordanengine, a density regulator for each character 'of stock to be treated,each regulator delivering to the Jordan engine, means for disconnectingany regulator from the Jordan engine, means for preparingeach characterof stock and feeding it to the proper regulator, and a series of beaterengines through which the stock passes from the hard stock 'preparingmeans to the regulator.

4. Apparatus for treating hard or soft stock, comprising a beatingengine,aplural ity of means for preparing stockfor the engines, landmeans for delivering stock from either or both of the said means to theengine, means controlled by' the density of the stock interposed betweeneach of the said means and the beating engine for regulating the densityof the stock and for maintaining the said density substantially uniform.

5. Apparatus for treating paper stocks of different character,comprising a common beater engine, means for delivering the said stockstothe enginein definite proportions, a series of supplementary beaterengines through which one of said stocks must pass to the common engine,and a density regulator for regulating the density of each stock andcontrolled .by the stock. 6. Means for blending paper stocks,coinprising a beater engine, means for delivering the stocks to thelengine in definite proportions, a supplementary which one ofl the saidstocks passes, and means controlled bythe fiow of each s tock formaintaining said 'stock of substantially uniform density. I.

In testimony whereof I a'ilx my signature.

- f GEORGE STANFORD WITH, Jr.

engine throughl

